Braiding-machine stop-motion.



PATENTED APR. 21, 1908.

O. A. ROBBINS,

BRAIDING MACHINE STOP MOTION.

APPLIUATION FILED MAR. 13. 1907.

No. 885,523. PATENTED APR. 21, 1908.

0. A. ROBBINS. BRAIDING MACHINE STOP MOTION.

APPLIOATION FILED MAR.13. 1907.

2 SHEETS-SHEET 2.

OLIVER A. ROBBINS, OF CHARLOTTE, NORTH CAROLINA.

BRAIDING-MACHINE S'IOl -MOTION No. 885,523. Specification of Letters Patent.

Patented April 21, 190B.

' Application filed March 13, 1907. Serial No. 362,161.

T all whom it may concern:

Be it known that l, OLIVER A. ltonnnvs, a citizen ol the United States, residingat (.lharlot-to in thecount-Vol'hlecklenbei andState of North arolina, have invented. certain new and useful lniprovementsun Braiding-Wm chine Stop-Motions, of which the following is a specification, reference being had therein to the accompanying drawing.

This invimtion provides a stop mechanism for braiding-1nachines in which. is included an electrically-releasable power-shifting device of novel construction which is caused to be actuated to stop the machine by the closing of an electric circuit upon exhaustion ol the supply of material on any one of the bobbins. novel means being provided to close the circuit under such conditions.

When read inconneotion with the precise description hereinafter, the details ol construction and arrangement ol parts contemplated by this invention will be apparent from the accompanying drawings, l'orming part hereof, wherein a preferable embodi ment of the invention is disclosed, for purposes of illustration.

Like reference-cliaracters refer to .co'rrcspondmg parts nl the several views of the drawings, wherein my invention is illustrated as applied to a braiding-machine, only such parts of the. machine being shown in the several views as are necessary for the proper exposition of the invention, and wherein Figure 1 is a plan view; Fig. 2 is a view in elevation Fig. 3 is an enlarged view, in elevation, of a bobbin, its mounting, and as 'sociated parts, some of which are shown'in section; and-Fig. 4 is a plan view of some of 3, the, bobbin being shown-in section.

Having more particular reference to the drawings, 5 designates the frame of the machine, which is supported by legs having a 2 von a transverse shaft 11 tie connection 7 thereon.

I Themachine is actuated by a belt 8, which is shift'able on fast and loose pulleys 9 and 10, journaled in hang era 12, attached to the frame of the machine,

this shaft transmitting gear 13 and m the frame of the machine; A spur-pinion 16,'keyed on shaft'15, meshes with an GXtGT-r nal ear 17, associated with which are various m'ec anisms, not necessary for present purpower by means. of

pinion 1.4 to ash aft 15, j ournaled,

carrier 18, which impels the bobbins 19, only one of which is shown, along groove 20 of cam 21, in a manner common to machines of this character.

The device for shitting belt 8 from one of pulleys t! and It) to the other includes hangers 22 and 23, on which is lougitudinallymovable a rod 24, carrying a strap-fork 1Z5 arranged to engage the belt. ltod 24- has attached thereto a collar lti, and for the purpose of manual shifting of the belt a handlevcr 27 is pivotally connected with this collar and lulcrumcd on some convenient part of the machine. Also mounted for longitudinal movement in hangers .22 and 23 is a rod 28, disposed adjacent to and parallel with rod 24. A collar 2%) is attached to rod .28 intermediate hangers 22 and 23, and a coil-spring 30 is dis posed on the rod and positioned between hanger 22 and collar 29, the spring having a tendency to move collar 2!) and thereby the rod away from this hanger. Attached to rod 28, and embracing and longitudinally movable on rod 24 is a kicker 31, arranged for engagement with collar 26 of the latter rod in the direction of the force spring 30. Rod 28 is formed with a notch or shoulder 32. i For the purpose of holding spring 30 normally under tension, and to automatically release the spring at the proper time, an electrically-actuated device is mounted on tie box, whereby arm 34 in engagementwith rod 28 normally holds spring 30 under tension.

which is arranged when energized in a man which constitutes an armature for the magnet, from engagement with arn1'34, whereby tension against spring 30 is released in an maybe tUljllSiOtl for proper engagement with poses to describe, arranged to actuate the" exerted by the connection 7. This device includes a magobvious manner. In order that trip-lever 35" at or near its end projecting into the magnet- Adjacent to trip-lever 35 is a magnet 36,-

ner described below to drawthe trip lever,

arm 34, the free end of the lever is provided with a set-screw .35, which is engageable with a seat in the magnet-box, whereby upward swing of the arm of the lever adjacent to arm 34 may be regulated.

When the releasing mechanism is tripped and the spring released, the spring, through the instrumentality of collar 29, red 28, kicker 31, collar 26, and rod 24, will cause the strap-fork 25 to move in the direction of the arrow and shift the belt from fast pulley 9 to loose pulley 10 and thereby stop shaft 11 and the actuation of the machine. It will be noted that collar 26is so positioned on rod 24 that this red may be manually moved by lever 27 to shift the belt without engagement with kicker "31, and, therefore, that manual shifting may be effected without interference with or by the automatic shifting mechanisms.

For the purpose of energizing magnet 36 when the supply of material carried by any one of bobbins 19 is exhausted, the positive pole of a battery 37 or any other suitable source of electricity is connected with the machine by a conductor 38, and the negative pole is connected with the magnet by a conductor. 39, the magnet being connected in turn by a conductor 40 with upright ribbonsteel springs or wires 41 arranged in groups at intervals adjacent to cam 21. Springs 41 are supported by brackets 42 bolted to the main part of the machine and insulated therefrom by insulation 43.

The bobbin 19, which is carried by a spindle 44 of carrier 18, is formed with a drum 45, aroundwhich is disposed a band 46 of metal or other suitable conductive material, and this band is connected by .a conductor 47 with a band 48 of conductive material disposed around a flange'49 of the bobbin, such a flange being formed at each end of the drum, whereby a spool-like structure is provided. Band 48 is arranged for intermittent electrical contact with sprin s 41 as the carrier travels along groove 20 oi cam 21. Springs 41 are disposed in groups of several; and, should a good connection not be made with band 48 when the first of a group is struck, other springs of the group will be engaged, whereby several will be simultaneously in contact and a good connection insured. Mounted on carrier 18, and adjacent to bobbin 19, is a standard 50, from which projects a spring 51, which is arranged for resilient engagement with .the material wound on the bobbin and with band 46 when the material is exhausted therefrom and the band exposed. Spring 51 is slit for a considerable portion of its length to form bifurcations 52, which latter are coiled around standard 50 from its central parttoward each end and fastened thereto at ornear'the ends by rivets 53, the free end of the spring projecting from the central portion of'the standard and being held under tension against the bobbin.

cuit'being formed when this band is un' covered. A short circuit from the machines to springs 41 is prevented by insulation 43 between brackets 42 and the machine.

When the machine is in operation, flangeband 48 of the bobbins intermittently'engages springs 41 as the bobbins travel along 4 those parts of groove 20 adjacent 4 to the periphery of cam 21. When band 46 of any *obbin is uncovered by exhaustion of the material thereonat a time the flange-band 48 of that bobbin is in engagement with one or more springs 41, the circuit is closed, the magnet energized, the belt shifted as a result of the release mechanism being tripped, and the machine stopped. When the bobbinband is uncovered at a time the flange-band is not in engagement with a spring 41 the circuit will be completed on the next engagement of the flange-band and a spring 41.

Having thus described my invention, what I claim as new, and desire to secure by Lettersf Patent, is

1. The combination in a braiding-machine including a movable bobbin, of a stopmotion comprising an electrically-affected power-shifter, a source of electricity, a contact device on and insulated from the machine for electrical contact with said bobbin, an electric circuit including the source of electricity, the bobbin, power-shifter, and contact device, and means associated with said bobbin whereby the circuit is closed upon exhaustion of material carried by the bobbin.

2. The combination in a braiding-machine including a movable bobbin in electrical contact with the machine, of a sto i-motion comprising an electrically-affectec power shifter, a source of electricity, a contact device on and insulated from the machine for electrical contact with said bobbin, a conductor between the source of electricity and the machine, a conductor between the source of electricity and the power-shifter, a cona strip of conductive material arranged adj acent to the path of the bobbin, and a support for said contact device insulated from the machine.

5. In a braiding-machine, the combination with a movable bobbin included in an electric circuit, of an insulated support. on said ma chine, and upright resilient contact devices positioned in groups on said sup cent to the path of said bobbin am arranged to be en 'aged thereby.

6. A obbin for braiding-machines comprising a spool-like structure having a drum witha flange, a contact-band on the drum, a contact-band on the flange, and a conductive connection between said contact-bands.

7. In a braidin machine, a bobbin associated with a resi ient contact-arm movable therewith, saidbobbincom rising a flange.-

arranged for 'direct electrica contact with a fixed part of the machine, a band on said bobbin with which said arm is capable of contact, and a conductor between sald flange and band. I I

.8. In a braiding-machine, the combination with a carrierincluding a spindle and a st andard adjacent thereto, of a bobbin on said spindle and formed with a flange, a band on "'said flan e arranged for contact with a fixed part of t re machine, a band on the drum of the bobbin, a conductor between said bands, and a resilient arm carmed by said standard ort adj aand arranged for contact with said drumband.

9. In a braiding-machine, a stop-motion comprising a shifter-rod, a kicker-rod, a fixed pro'ection on one of said rods, a kicker on said other rod, said shifter-rod being ca able of movement independently-of said kickerrod without bringing said kicker and projection into engagement, a spring having a tendency to move said kicker-rod in direction to drive said kicker and projection together whereby said shifter-rod is moved, and a trip device cooperating to hold said spring normally under tension.

10. In a braiding-machine, a sto -Inoti0n comprising a sl1ifter-rod havin a fi iced pro- 'ection thereon, a kicker-rod carrying a icker capable of engagement with said projection, said shifter-rod being ca able of movement independently of said k1cker-rod Without bringing said kicker and projection into engagement, a spring having atendency to move said kicker-rod in direction to drive said kicker against said projection and move said shiftenrod, and a trip device cooperating to hold said spring normally under tension.

In testimony whereof I attix my signature in presence of two Witnesses.

OLIVER A. ROBBIN Witnesses D. R. WILSON, E. MCCOMB. 

